题目

He was crazy ____ his study when he was young, which contributes ____ his success. in later life. A. for; to       B. about; to       C. about; on       D. for; on   答案： B be crazy about sth./sb.常用于口语中，作表语，表示“狂热；热衷”。contribute to “对…的贡献，对…有益”。  

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